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Premier Orthopedic & Neurosurgery Care in Stamford, CT
Orthopaedic & Neurosurgery Specialists (ONS) is a nationally recognized leader in musculoskeletal care, ranked among the top 5 orthopedic centers of excellence in the United States by Castle Connolly. Our fellowship-trained specialists provide expert care across a comprehensive range of subspecialties, including hip and knee replacement, sports medicine, neurosurgery, spine, hand and upper extremity, foot and ankle, physiatry, primary care sports medicine, and rheumatology. With multiple locations across Fairfield and Westchester counties, our physicians are deeply embedded in the communities they serve, prioritizing personalized care for both everyday patients and elite athletes. Our practice combines advanced diagnostic technologies, such as MRI, X-ray, nerve conduction studies, and ultrasound-guided injections, with innovative treatment approaches like orthobiologics and physical therapy.We are committed to restoring patients' quality of life through evidence-based practices and a patient-first philosophy. Our team lives locally, supports community initiatives, and maintains rigorous professional standards to ensure optimal outcomes. As a trusted regional resource, ONS delivers comprehensive orthopedic and neurosurgical solutions tailored to individual needs. Our accreditation by leading medical institutions underscores our dedication to excellence. We continuously invest in staff training, cutting-edge equipment, and streamlined patient experiences to uphold our reputation as a premier orthopedic practice.
Services
Hip and Knee Replacement
Sports Medicine
Neurosurgery
Spine Care
Hand and Upper Extremity
Foot and Ankle
Physiatry
Rheumatology
Urgent Ortho Care
Physical Therapy
Highlights and features
- We have fellowship-trained specialists in 10+ orthopedic subspecialties.
- Our practice is recognized as a Top 5 Orthopedic Center of Excellence.
- We offer comprehensive diagnostics including MRI, EMG, and ultrasound-guided injections.
- Our physicians provide care for both community and elite athletes.
- We maintain multiple convenient locations across Fairfield and Westchester counties.
Associations and certifications
- Castle Connolly
Services
Hip and Knee Replacement
Our fellowship-trained surgeons specialize in advanced hip and knee replacement procedures using minimally invasive techniques. We treat osteoarthritis, rheumatoid arthritis, and traumatic injuries with customized implant solutions. Patients benefit from preoperative education and postoperative rehabilitation programs to optimize recovery outcomes.
Sports Medicine
Comprehensive care for sports-related injuries includes arthroscopic surgery, ligament reconstruction, and concussion management. Our specialists work with professional athletes and active individuals to develop return-to-play protocols. We emphasize injury prevention through biomechanical assessments and performance optimization programs.
Spine Care
Multidisciplinary spine care addresses conditions like herniated discs, spinal stenosis, and scoliosis. Treatment options range from conservative therapies to complex spinal fusion surgeries. Our team utilizes advanced imaging and minimally invasive techniques to reduce recovery times while maintaining spinal stability and function.
Urgent Ortho Care
After-hours urgent orthopedic care treats fractures, sprains, and acute injuries with immediate diagnostic imaging and treatment. Available Monday-Friday 4-7 PM and Saturdays 12-4 PM in Wilton. Walk-in patients receive prompt evaluation by board-certified specialists without appointment requirements.
Physical Therapy
Customized rehabilitation programs combine manual therapy, therapeutic exercises, and modalities to restore mobility after injury or surgery. Our licensed therapists collaborate with physicians to ensure continuity of care. Treatment plans incorporate functional training to improve daily living activities and prevent future injuries.
Questions
What orthopedic specialties do you offer?
We provide care across 10+ subspecialties including hip/knee replacement, sports medicine, spine, hand/upper extremity, foot/ankle, neurosurgery, physiatry, and rheumatology.
Do you have urgent orthopedic care options?
Yes, our Wilton location offers after-hours urgent ortho care Monday-Friday 4-7 PM and Saturdays 12-4 PM for acute injuries and fractures.
Are your physicians fellowship-trained?
All our specialists have completed additional fellowship training in their respective orthopedic subspecialties beyond standard residency requirements.
What diagnostic imaging services are available?
We offer on-site MRI, X-ray, nerve conduction studies, EMG, and ultrasound-guided injection capabilities for comprehensive diagnostic evaluation.
Do you treat both athletes and general patients?
Our practice serves patients of all activity levels, from professional athletes to individuals seeking improved mobility for daily living activities.
What locations serve Fairfield and Westchester counties?
We have offices in Greenwich, Stamford, Wilton (CT), Harrison (NY), and Danbury to provide convenient access across the region.
Reviews (7)
Christine Konczewski
Jun 05, 2022
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My knee replacement surgery with Dr. Kavanagh has been a very positive experience from the initial visit through the post-op visit. He took as much time as needed to inform me about the procedure and answer all my questions. The entire team, both in the office and the hospital, are caring professionals who were always available to explain what was happening and took excellent care of me.
Tami Krom
May 17, 2022
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I cannot say enough positive things about Dr Simon! He has been on top of my medical issues from the second I walked in the office for the first time to current. He has done 3 of my surgeries and has done an amazing job each time. My expectations for doctors over recent years have unfortunately declined, but Doctor Simon has far exceeded any expectations. He has never once rushed through an appointment, he takes his time, explains everything and makes sure I understand, he has always treated me like a person and not just a number.
His follow ups/check ins in the hospital after surgery amazes me. He goes above and beyond. I only wish that he did hip surgeries as well. He's my medical hero and I am very grateful to have him as my surgeon! T. Larsen
His follow ups/check ins in the hospital after surgery amazes me. He goes above and beyond. I only wish that he did hip surgeries as well. He's my medical hero and I am very grateful to have him as my surgeon! T. Larsen
Jeff Poarch
Feb 19, 2022
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Best orthopedist there is in my opinion. My shoulder felt like new after rotator cuff surgery with Dr Sethi. Hadn't been able to throw overhand in 15 years until the surgery, now I can wind up like Mariano Rivera.
Beth Brandes
Feb 10, 2022
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ONS is excellent! Dr. Miller is very professional and knowledgeable. He performed complete shoulder replacement on me in 2018. The surgery and recovery went extremely well! I definitely recommend ONS.
Lisa Luciano
Feb 08, 2022
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I recently had a full knee replacement done by Dr. Kavanagh. He and his staff are professional and patient. They answered all my questions and made the experience as easy as possible. They helped me every step of the way from the preparation through the surgery and recovery. I now have a new knee and will be going back to have Dr. Kavanagh do the other one as I know I will be in good hands.
James Hayes
Jan 24, 2022
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Dr Berliner was fantastic. My son had a hip labrum revision by Dr Greene. Local Dr messed him up. So I decided to also drive 2.5 to ONS. My appointment was with Dr Berliner. Filled me with confidence that there way be a solution to fix my hip replacement issues. Highly recommend ONS, and all of their Drs.
Bernetta Gordon
Jan 18, 2022
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Dr. Seth Miller performed my total shoulder replacement and rotator repair in January, 2021. I had total confidence in his ability, as he took the time to explain the entire procedure, and answered every question I had before I had the chance to ask. His staff is excellent and very responsive. The recovery was incredible. I did what I was told, from my arm exercises to physical therapy. I just saw him for my 1 year follow up and I am thrilled.
